#define _CRT_SECURE_NO_WARNINGS 1
#include<bits/stdc++.h>
using namespace std;
int main()
{
    string s;
    cin >> s;
    if (s == "shitou")
        cout << "shitou" << endl;
    else if (s == "jiandao")
        cout << "jiandao" << endl;
    else if (s == "bu")
        cout << "bu" << endl;
    return 0;
}